Table of Contents

Introduction 1 Programming is fun! 1 A bit of history 3 So what can you do with the Raspberry Pi? 8 Part I: Connecting the Board CHAPTER 1 Meet the Raspberry Pi 11 ARM vsx86 12 Windows vsLinux 13 Getting Started with the Raspberry Pi 14 Connecting a Display 14 Composite Video 14 HDMI Video 15 DSI Video 16 Connecting Audio 16 Connecting a Keyboard and Mouse 17 Flashing the SD Card 19 Flashing from Linux 20 Flashing from OS X 21 Flashing from Windows 21 Connecting External Storage 22 Connecting the Network 23 Wired Networking 24 Wireless Networking 25 Connecting Power 26 CHAPTER 2 Linux System Administration 27 Linux: An Overview 28 Linux Basics 30 Introducing Debian 30 Using External Storage Devices 34 Creating a New User Account 36 File System Layout 37 Logical Layout 37 Physical Layout 39 Installing and Uninstalling Software 40 Finding Software 41 Installing Software 42 Uninstalling Software 43 Upgrading Software 44 CHAPTER 3 Troubleshooting 45 Keyboard and Mouse Diagnostics 46 Power Diagnostics 47 Display Diagnostics 49 Boot Diagnostics 50 Network Diagnostics 50 The Emergency Kernel 53 CHAPTER 4 Network Configuration 55 Wired Networking 56 Wireless Networking 59 No Encryption 68 WEP Encryption 68 WPA/WPA2 Encryption 69 Connecting to the Wireless Network 69 CHAPTER 5 Partition Management 71 Creating a New Partition 72 Resizing Existing Partitions 76 Automatic Resizing 76 Manual Resizing 77 Moving to a Bigger SD Card 81 Imaging from Linux 82 Imaging from OS X 83 Imaging from Windows 83 CHAPTER 6 Configuring the Raspberry Pi 85 Hardware Settings--config.txt 86 Modifying the Display 87 Boot Options 90 Overclocking the Raspberry Pi 91 Overclocking Settings 92 Overvoltage Settings 93 Disabling L2 Cache 94 Enabling Test Mode 95 Memory Partitioning--start.elf 96 Software Settings--cmdline.txt 97 Part II: Using the Pi as a Media Centre, Productivity Machine and Web Server CHAPTER 7 The Pi as a Home Theatre PC 103 Playing Music at the Console 104 Dedicated HTPC with Rasbmc 106 Streaming Internet Media 108 Streaming Local Network Media 109 Configuring Rasbmc 111 CHAPTER 8 The Pi as a Productivity Machine 113 Using Cloud-Based Apps 114 Using OpenOffice.org 117 Image Editing with The Gimp 119 CHAPTER 9 The Pi as a Web Server 123 Installing a LAMP Stack 124 Installing WordPress 128 Part III: Programming and Hacking CHAPTER 10 An Introduction to Scratch 135 Introducing Scratch 136 Example 1: Hello World 137 Example 2: Animation and Sound 140 Example 3: A Simple Game 143 Robotics and Sensors 149 Sensing with the PicoBoard 149 Robotics with LEGO 150 Further Reading 150 CHAPTER 11 An Introduction to Python 151 Introducing Python 152 Example 1: Hello World 152 Example 2: Comments, Inputs, Variables and Loops 158 Example 3: Gaming with pygame 162 Example 4: Python and Networking 171 Further Reading 178 CHAPTER 12 Hardware Hacking 179 Electronic Equipment 180 Reading Resistor Colour Codes 182 Sourcing Components 184 Online Sources 184 Offline Sources 185 Hobby Specialists 186 The GPIO Port 186 UART Serial Bus 188 I²C Bus 189 SPI Bus 189 Using the GPIO Port in Python 189 Installing the GPIO Python Library 190 GPIO Output: Flashing an LED 192 GPIO Input: Reading a Button 196 Moving Up From the Breadboard 200 A Brief Guide to Soldering 203 CHAPTER 13 Add-on Boards 209 Ciseco Slice of Pi 210 Adafruit Prototyping Pi Plate 214 Fen Logic Gertboard 217 Part IV: Appendixes APPENDIX A Python Recipes 225 Raspberry Snake (Chapter 11, Example 3) 226 IRC User List (Chapter 11, Example 4) 228 GPIO Input and Output (Chapter 12) 230 APPENDIX B HDMI Display Modes 231 Index 237

About the Author

Eben Upton is the co-creator of the Raspberry Pi board and the founder of the Raspberry foundation. Gareth Halfacree is a freelance technology journalist, open source advocate and erstwhile sysadmin.